who is responsible for the bubble of all coin?

many people said there is bubble in all coin specially bitcoin.but they neglect one thing, they should see how much paper money the central banks printing.they print so many different colors of paper:just name it and name the amount. why they can do this? how can they make like this?they steal the money from the people as their will. all coins are like the boat over the paper money sea. why they soar up? the central bank, they makes the water soars.
everybody said there is the bubble in bitcoin. but they should to know what is the fact back of the bubble, not only repeated said there is bubble...bubble...bubble..